Spring shade-roller



(No Model.)

G. T. BRiGGS.

SPRING SHADE ROLLER.

Patented Jan. 3, 1888.

VE-[T1 5 5 5 E 5 UNITED STATES PATENT OFFICE.

GEORGE T. BRIGGS, OF GAMBR-IDGEPOBT, MASSACHUSETTS.

SPRING SHADE-ROLLER.

SPECIFICATION forming part of Letters Patent No. 375,986, dated January3, 1888.

Application filed March 15, 1886. Serial No 195.248. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE T. BRIGGS, a citizen of the UnitedStates,residing at Cambridgeport, in the county of Middlesex and Stateof Massachusetts, have invented certain new and useful Improvements inSpring Shade-Rollers; and I do declare the following to beafull, clear,andexact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters andfigures of reference marked thereon, which form a part of thisspecification.

My invention relates to the spindle and step to which the spring isattached, andhas for its object a more perfect and cheaper method ofconstruction.

In the drawings-in which like letters indicate like parts, Figure 1isacentral longitudinal section, and Fig. 2 details of the same.

ais the roller; 1), itsend plate. cis the metal spindle end, which isdriven into the wooden spindle c. c" is the metal ferrule on the end ofthe. wooden spindle to prevent its splitting. dis the spring, and e isthe step for supporting the inner end of the spindle in the usualmanner. I

My improvements consist, first, in forming the metal ferrule c with thechannel or groove c second, in forming the step e with a similar channelor groove, 6'.

As shown in the drawings, that portion of the metal ferrule c" and stepe on which the coils of the spring (1 are expanded is made considerablylarger than the internal diameter of said coils when in their normalcondition, but are made tapering, so said coils will freely enterthereon. The channel or groove in the ferrule and step is madesufficiently deep to allow the end coils of the spring d to contract totheir normal diameter.

To attach the ends of the spring to the spindle or step the end coils ofthe former are pressed-onto the tapering portion of the latter, and byturning said spring in a direction prevent the slipping around thereonof the spring, and the winding up of the latter more tightly bindstheparts together.

I am aware of the reissued patent to Hartshorne, No. 7,370, and ofpatents to Beiersdorf and Bunker, No. 214,871; to Bryant, No. 298,824,and to Eddy, No. 310,658, and do not make any claim to the constructionand combination of parts shown therein; but

What I claim as my invention is- 1. In aspring shade-roller, thecombination, with the spindle and the coiled spring encircling saidspindle, of the tapering metal ferrule 0, secured to the spindle andhaving an annular groove or channel, 0 intermediate its ends to receiveone end of the coiled spring, substantially as described.

2. In a spring shaderollcr, the combination of the spindle c, thespindle-step e, having a tapering end and an annular groove, 6, thetapering metallic ferrule c", secured to the spindle and provided withan annular groove, 0 and the coiled spring'd, encircling the spindle andhaving its ends engaged in the annular grooves of the step and ferrule,substantially as described.

3. In a spring shade-roller, the combination, with'the spindle and thecoiled spring encircling said spindle, of the spindlestep e, having atapering end and an annular groove, 6',

to receive one end of the coiled spring, sub

stantial] y as described.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE T. BRIGGS. \Vitnesses:

THOMAS OoLEY, WILLIAM ALLEN.

